Extruder won't heat up after i hit print.... extruder works in manual mode.... (slic3r&Repetier)
hey boys and girls 
i have a problem with my delta printer.... everything is hooked up correctly and powered correctly... my extruder warms up in manual control but won't in print mode...
i dont know what to do about it... please HELP!!
nothing seems t bee wrong i think with my start and stop G-code but i'll post them annyway:
Start:
M106; fan on
G21 ;metric values
G91 ;relative positioning
M106
G28 ; move to home
M106
M109 S[first_layer_temperature_0];set extruder temp and start heating
G28
G92 E0 ;zero the extruded length
G90 ;absolute positioning
Stop:
M104 S0 ; turn off temperature
G28 X0 ; home X axis
M84 ; disable motors
M106 S127
M109 S110
M81
thanks for the help!